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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.9 by dl, Thu Dec 4 20:54:46 2003 UTC vs.
Revision 1.233 by jsr166, Sat Jul 15 23:15:21 2017 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea and Martin Buchholz with assistance from
3	>	* members of JCP JSR-166 Expert Group and released to the public
4	>	* domain, as explained at
5	>	* http://creativecommons.org/publicdomain/zero/1.0/
6	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
7	>	* Pat Fisher, Mike Judd.
8		*/
9
10	<	import junit.framework.*;
11	<	import java.util.*;
12	<	import java.util.concurrent.*;
13	<	import java.io.*;
14	<	import java.security.*;
10	>	/*
11	>	* @test
12	>	* @summary JSR-166 tck tests, in a number of variations.
13	>	*          The first is the conformance testing variant,
14	>	*          while others also test implementation details.
15	>	* @build *
16	>	* @modules java.management
17	>	* @run junit/othervm/timeout=1000 JSR166TestCase
18	>	* @run junit/othervm/timeout=1000
19	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
20	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
21	>	*      -Djsr166.testImplementationDetails=true
22	>	*      JSR166TestCase
23	>	* @run junit/othervm/timeout=1000
24	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
25	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
26	>	*      -Djsr166.testImplementationDetails=true
27	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
28	>	*      JSR166TestCase
29	>	* @run junit/othervm/timeout=1000
30	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
31	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
32	>	*      -Djsr166.testImplementationDetails=true
33	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
34	>	*      -Djava.util.secureRandomSeed=true
35	>	*      JSR166TestCase
36	>	* @run junit/othervm/timeout=1000/policy=tck.policy
37	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
38	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
39	>	*      -Djsr166.testImplementationDetails=true
40	>	*      JSR166TestCase
41	>	*/
42	>
43	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
44	>	import static java.util.concurrent.TimeUnit.MINUTES;
45	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
46	>
47	>	import java.io.ByteArrayInputStream;
48	>	import java.io.ByteArrayOutputStream;
49	>	import java.io.ObjectInputStream;
50	>	import java.io.ObjectOutputStream;
51	>	import java.lang.management.ManagementFactory;
52	>	import java.lang.management.ThreadInfo;
53	>	import java.lang.management.ThreadMXBean;
54	>	import java.lang.reflect.Constructor;
55	>	import java.lang.reflect.Method;
56	>	import java.lang.reflect.Modifier;
57	>	import java.security.CodeSource;
58	>	import java.security.Permission;
59	>	import java.security.PermissionCollection;
60	>	import java.security.Permissions;
61	>	import java.security.Policy;
62	>	import java.security.ProtectionDomain;
63	>	import java.security.SecurityPermission;
64	>	import java.util.ArrayList;
65	>	import java.util.Arrays;
66	>	import java.util.Collection;
67	>	import java.util.Collections;
68	>	import java.util.Date;
69	>	import java.util.Enumeration;
70	>	import java.util.Iterator;
71	>	import java.util.List;
72	>	import java.util.NoSuchElementException;
73	>	import java.util.PropertyPermission;
74	>	import java.util.concurrent.BlockingQueue;
75	>	import java.util.concurrent.Callable;
76	>	import java.util.concurrent.CountDownLatch;
77	>	import java.util.concurrent.CyclicBarrier;
78	>	import java.util.concurrent.ExecutionException;
79	>	import java.util.concurrent.Executors;
80	>	import java.util.concurrent.ExecutorService;
81	>	import java.util.concurrent.ForkJoinPool;
82	>	import java.util.concurrent.Future;
83	>	import java.util.concurrent.RecursiveAction;
84	>	import java.util.concurrent.RecursiveTask;
85	>	import java.util.concurrent.RejectedExecutionHandler;
86	>	import java.util.concurrent.Semaphore;
87	>	import java.util.concurrent.SynchronousQueue;
88	>	import java.util.concurrent.ThreadFactory;
89	>	import java.util.concurrent.ThreadLocalRandom;
90	>	import java.util.concurrent.ThreadPoolExecutor;
91	>	import java.util.concurrent.TimeUnit;
92	>	import java.util.concurrent.TimeoutException;
93	>	import java.util.concurrent.atomic.AtomicBoolean;
94	>	import java.util.concurrent.atomic.AtomicReference;
95	>	import java.util.regex.Pattern;
96	>
97	>	import junit.framework.AssertionFailedError;
98	>	import junit.framework.Test;
99	>	import junit.framework.TestCase;
100	>	import junit.framework.TestResult;
101	>	import junit.framework.TestSuite;
102
103		/**
104		* Base class for JSR166 Junit TCK tests.  Defines some constants,
105		* utility methods and classes, as well as a simple framework for
106		* helping to make sure that assertions failing in generated threads
107		* cause the associated test that generated them to itself fail (which
108	<	* JUnit doe not otherwise arrange).  The rules for creating such
108	>	* JUnit does not otherwise arrange).  The rules for creating such
109		* tests are:
110		*
111		* <ol>
112		*
113	<	* <li> All assertions in code running in generated threads must use
114	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
115	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
116	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
113	>	* <li>All assertions in code running in generated threads must use
114	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
115	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
116	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
117		* particularly recommended) for other code to use these forms too.
118		* Only the most typically used JUnit assertion methods are defined
119	<	* this way, but enough to live with.</li>
119	>	* this way, but enough to live with.
120		*
121	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
122	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
121	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
122	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
123		* them. These methods are used to clear and check for thread
124	<	* assertion failures.</li>
124	>	* assertion failures.
125		*
126	<	* <li>All delays and timeouts must use one of the constants <tt>
127	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
128	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
126	>	* <li>All delays and timeouts must use one of the constants {@code
127	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
128	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
129		* discriminable from zero time, and always allows enough time for the
130		* small amounts of computation (creating a thread, calling a few
131		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
132		* is always discriminable as larger than SHORT and smaller than
133		* MEDIUM.  And so on. These constants are set to conservative values,
134		* but even so, if there is ever any doubt, they can all be increased
135	<	* in one spot to rerun tests on slower platforms</li>
135	>	* in one spot to rerun tests on slower platforms.
136		*
137	<	* <li> All threads generated must be joined inside each test case
138	<	* method (or <tt>fail</tt> to do so) before returning from the
139	<	* method. The <tt> joinPool</tt> method can be used to do this when
140	<	* using Executors.</li>
137	>	* <li>All threads generated must be joined inside each test case
138	>	* method (or {@code fail} to do so) before returning from the
139	>	* method. The {@code joinPool} method can be used to do this when
140	>	* using Executors.
141		*
142		* </ol>
143		*
144	<	* <p> <b>Other notes</b>
144	>	* <p><b>Other notes</b>
145		* <ul>
146		*
147	<	* <li> Usually, there is one testcase method per JSR166 method
147	>	* <li>Usually, there is one testcase method per JSR166 method
148		* covering "normal" operation, and then as many exception-testing
149		* methods as there are exceptions the method can throw. Sometimes
150		* there are multiple tests per JSR166 method when the different
151		* "normal" behaviors differ significantly. And sometimes testcases
152	<	* cover multiple methods when they cannot be tested in
153	<	* isolation.</li>
154	<	*
66	<	* <li> The documentation style for testcases is to provide as javadoc
152	>	* cover multiple methods when they cannot be tested in isolation.
153	>	*
154	>	* <li>The documentation style for testcases is to provide as javadoc
155		* a simple sentence or two describing the property that the testcase
156		* method purports to test. The javadocs do not say anything about how
157	<	* the property is tested. To find out, read the code.</li>
157	>	* the property is tested. To find out, read the code.
158		*
159	<	* <li> These tests are "conformance tests", and do not attempt to
159	>	* <li>These tests are "conformance tests", and do not attempt to
160		* test throughput, latency, scalability or other performance factors
161		* (see the separate "jtreg" tests for a set intended to check these
162		* for the most central aspects of functionality.) So, most tests use
163		* the smallest sensible numbers of threads, collection sizes, etc
164	<	* needed to check basic conformance.</li>
164	>	* needed to check basic conformance.
165		*
166		* <li>The test classes currently do not declare inclusion in
167		* any particular package to simplify things for people integrating
168	<	* them in TCK test suites.</li>
168	>	* them in TCK test suites.
169		*
170	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
171	<	* runs all JSR166 unit tests.</li>
170	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
171	>	* runs all JSR166 unit tests.
172		*
173		* </ul>
174		*/
175		public class JSR166TestCase extends TestCase {
176	+	private static final boolean useSecurityManager =
177	+	Boolean.getBoolean("jsr166.useSecurityManager");
178	+
179	+	protected static final boolean expensiveTests =
180	+	Boolean.getBoolean("jsr166.expensiveTests");
181	+
182	+	/**
183	+	* If true, also run tests that are not part of the official tck
184	+	* because they test unspecified implementation details.
185	+	*/
186	+	protected static final boolean testImplementationDetails =
187	+	Boolean.getBoolean("jsr166.testImplementationDetails");
188	+
189	+	/**
190	+	* If true, report on stdout all "slow" tests, that is, ones that
191	+	* take more than profileThreshold milliseconds to execute.
192	+	*/
193	+	private static final boolean profileTests =
194	+	Boolean.getBoolean("jsr166.profileTests");
195	+
196	+	/**
197	+	* The number of milliseconds that tests are permitted for
198	+	* execution without being reported, when profileTests is set.
199	+	*/
200	+	private static final long profileThreshold =
201	+	Long.getLong("jsr166.profileThreshold", 100);
202	+
203	+	/**
204	+	* The number of repetitions per test (for tickling rare bugs).
205	+	*/
206	+	private static final int runsPerTest =
207	+	Integer.getInteger("jsr166.runsPerTest", 1);
208	+
209	+	/**
210	+	* The number of repetitions of the test suite (for finding leaks?).
211	+	*/
212	+	private static final int suiteRuns =
213	+	Integer.getInteger("jsr166.suiteRuns", 1);
214	+
215	+	/**
216	+	* Returns the value of the system property, or NaN if not defined.
217	+	*/
218	+	private static float systemPropertyValue(String name) {
219	+	String floatString = System.getProperty(name);
220	+	if (floatString == null)
221	+	return Float.NaN;
222	+	try {
223	+	return Float.parseFloat(floatString);
224	+	} catch (NumberFormatException ex) {
225	+	throw new IllegalArgumentException(
226	+	String.format("Bad float value in system property %s=%s",
227	+	name, floatString));
228	+	}
229	+	}
230	+
231		/**
232	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
233	<	*/
234	<	public static void main (String[] args) {
235	<	junit.textui.TestRunner.run (suite());
232	>	* The scaling factor to apply to standard delays used in tests.
233	>	* May be initialized from any of:
234	>	* - the "jsr166.delay.factor" system property
235	>	* - the "test.timeout.factor" system property (as used by jtreg)
236	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
237	>	* - hard-coded fuzz factor when using a known slowpoke VM
238	>	*/
239	>	private static final float delayFactor = delayFactor();
240	>
241	>	private static float delayFactor() {
242	>	float x;
243	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
244	>	return x;
245	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
246	>	return x;
247	>	String prop = System.getProperty("java.vm.version");
248	>	if (prop != null && prop.matches(".*debug.*"))
249	>	return 4.0f; // How much slower is fastdebug than product?!
250	>	return 1.0f;
251	>	}
252	>
253	>	public JSR166TestCase() { super(); }
254	>	public JSR166TestCase(String name) { super(name); }
255	>
256	>	/**
257	>	* A filter for tests to run, matching strings of the form
258	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
259	>	* Usefully combined with jsr166.runsPerTest.
260	>	*/
261	>	private static final Pattern methodFilter = methodFilter();
262	>
263	>	private static Pattern methodFilter() {
264	>	String regex = System.getProperty("jsr166.methodFilter");
265	>	return (regex == null) ? null : Pattern.compile(regex);
266	>	}
267	>
268	>	// Instrumentation to debug very rare, but very annoying hung test runs.
269	>	static volatile TestCase currentTestCase;
270	>	// static volatile int currentRun = 0;
271	>	static {
272	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
273	>	// Avoid spurious reports with enormous runsPerTest.
274	>	// A single test case run should never take more than 1 second.
275	>	// But let's cap it at the high end too ...
276	>	final int timeoutMinutes =
277	>	Math.min(15, Math.max(runsPerTest / 60, 1));
278	>	for (TestCase lastTestCase = currentTestCase;;) {
279	>	try { MINUTES.sleep(timeoutMinutes); }
280	>	catch (InterruptedException unexpected) { break; }
281	>	if (lastTestCase == currentTestCase) {
282	>	System.err.printf(
283	>	"Looks like we're stuck running test: %s%n",
284	>	lastTestCase);
285	>	//                     System.err.printf(
286	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
287	>	//                         lastTestCase, currentRun, runsPerTest);
288	>	//                     System.err.println("availableProcessors=" +
289	>	//                         Runtime.getRuntime().availableProcessors());
290	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
291	>	dumpTestThreads();
292	>	// one stack dump is probably enough; more would be spam
293	>	break;
294	>	}
295	>	lastTestCase = currentTestCase;
296	>	}}};
297	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
298	>	thread.setDaemon(true);
299	>	thread.start();
300	>	}
301	>
302	>	//     public static String cpuModel() {
303	>	//         try {
304	>	//             java.util.regex.Matcher matcher
305	>	//               = Pattern.compile("model name\\s*: (.*)")
306	>	//                 .matcher(new String(
307	>	//                     java.nio.file.Files.readAllBytes(
308	>	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
309	>	//             matcher.find();
310	>	//             return matcher.group(1);
311	>	//         } catch (Exception ex) { return null; }
312	>	//     }
313	>
314	>	public void runBare() throws Throwable {
315	>	currentTestCase = this;
316	>	if (methodFilter == null
317	>	|| methodFilter.matcher(toString()).find())
318	>	super.runBare();
319	>	}
320	>
321	>	protected void runTest() throws Throwable {
322	>	for (int i = 0; i < runsPerTest; i++) {
323	>	// currentRun = i;
324	>	if (profileTests)
325	>	runTestProfiled();
326	>	else
327	>	super.runTest();
328	>	}
329	>	}
330	>
331	>	protected void runTestProfiled() throws Throwable {
332	>	for (int i = 0; i < 2; i++) {
333	>	long startTime = System.nanoTime();
334	>	super.runTest();
335	>	long elapsedMillis = millisElapsedSince(startTime);
336	>	if (elapsedMillis < profileThreshold)
337	>	break;
338	>	// Never report first run of any test; treat it as a
339	>	// warmup run, notably to trigger all needed classloading,
340	>	if (i > 0)
341	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
342	>	}
343		}
344
345		/**
346	<	* Collects all JSR166 unit tests as one suite
347	<	*/
348	<	public static Test suite ( ) {
349	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
350	<
351	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
352	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
353	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
354	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
355	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
356	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
357	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
358	<	suite.addTest(new TestSuite(AtomicLongTest.class));
359	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
360	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
361	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
362	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
363	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
364	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
365	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
366	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
367	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
368	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
369	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
370	<	suite.addTest(new TestSuite(DelayQueueTest.class));
371	<	suite.addTest(new TestSuite(ExchangerTest.class));
372	<	suite.addTest(new TestSuite(ExecutorsTest.class));
373	<	suite.addTest(new TestSuite(FutureTaskTest.class));
374	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
375	<	suite.addTest(new TestSuite(LinkedListTest.class));
376	<	suite.addTest(new TestSuite(LockSupportTest.class));
377	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
378	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
379	<	suite.addTest(new TestSuite(PrivilegedFutureTaskTest.class));
380	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
381	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
382	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
383	<	suite.addTest(new TestSuite(SemaphoreTest.class));
384	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
385	<	suite.addTest(new TestSuite(SystemTest.class));
386	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
387	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
388	<	suite.addTest(new TestSuite(ThreadTest.class));
389	<	suite.addTest(new TestSuite(TimeUnitTest.class));
390	<
346	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
347	>	*/
348	>	public static void main(String[] args) {
349	>	main(suite(), args);
350	>	}
351	>
352	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
353	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
354	>	long runTime;
355	>	public void startTest(Test test) {}
356	>	protected void printHeader(long runTime) {
357	>	this.runTime = runTime; // defer printing for later
358	>	}
359	>	protected void printFooter(TestResult result) {
360	>	if (result.wasSuccessful()) {
361	>	getWriter().println("OK (" + result.runCount() + " tests)"
362	>	+ "  Time: " + elapsedTimeAsString(runTime));
363	>	} else {
364	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
365	>	super.printFooter(result);
366	>	}
367	>	}
368	>	}
369	>
370	>	/**
371	>	* Returns a TestRunner that doesn't bother with unnecessary
372	>	* fluff, like printing a "." for each test case.
373	>	*/
374	>	static junit.textui.TestRunner newPithyTestRunner() {
375	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
376	>	runner.setPrinter(new PithyResultPrinter(System.out));
377	>	return runner;
378	>	}
379	>
380	>	/**
381	>	* Runs all unit tests in the given test suite.
382	>	* Actual behavior influenced by jsr166.* system properties.
383	>	*/
384	>	static void main(Test suite, String[] args) {
385	>	if (useSecurityManager) {
386	>	System.err.println("Setting a permissive security manager");
387	>	Policy.setPolicy(permissivePolicy());
388	>	System.setSecurityManager(new SecurityManager());
389	>	}
390	>	for (int i = 0; i < suiteRuns; i++) {
391	>	TestResult result = newPithyTestRunner().doRun(suite);
392	>	if (!result.wasSuccessful())
393	>	System.exit(1);
394	>	System.gc();
395	>	System.runFinalization();
396	>	}
397	>	}
398	>
399	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
400	>	TestSuite suite = new TestSuite();
401	>	for (Object suiteOrClass : suiteOrClasses) {
402	>	if (suiteOrClass instanceof TestSuite)
403	>	suite.addTest((TestSuite) suiteOrClass);
404	>	else if (suiteOrClass instanceof Class)
405	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
406	>	else
407	>	throw new ClassCastException("not a test suite or class");
408	>	}
409		return suite;
410		}
411
412	+	public static void addNamedTestClasses(TestSuite suite,
413	+	String... testClassNames) {
414	+	for (String testClassName : testClassNames) {
415	+	try {
416	+	Class<?> testClass = Class.forName(testClassName);
417	+	Method m = testClass.getDeclaredMethod("suite",
418	+	new Class<?>[0]);
419	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
420	+	} catch (Exception e) {
421	+	throw new Error("Missing test class", e);
422	+	}
423	+	}
424	+	}
425	+
426	+	public static final double JAVA_CLASS_VERSION;
427	+	public static final String JAVA_SPECIFICATION_VERSION;
428	+	static {
429	+	try {
430	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
431	+	new java.security.PrivilegedAction<Double>() {
432	+	public Double run() {
433	+	return Double.valueOf(System.getProperty("java.class.version"));}});
434	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
435	+	new java.security.PrivilegedAction<String>() {
436	+	public String run() {
437	+	return System.getProperty("java.specification.version");}});
438	+	} catch (Throwable t) {
439	+	throw new Error(t);
440	+	}
441	+	}
442	+
443	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
444	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
445	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
446	+	public static boolean atLeastJava9() {
447	+	return JAVA_CLASS_VERSION >= 53.0
448	+	// As of 2015-09, java9 still uses 52.0 class file version
449	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
450	+	}
451	+	public static boolean atLeastJava10() {
452	+	return JAVA_CLASS_VERSION >= 54.0
453	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
454	+	}
455	+
456	+	/**
457	+	* Collects all JSR166 unit tests as one suite.
458	+	*/
459	+	public static Test suite() {
460	+	// Java7+ test classes
461	+	TestSuite suite = newTestSuite(
462	+	ForkJoinPoolTest.suite(),
463	+	ForkJoinTaskTest.suite(),
464	+	RecursiveActionTest.suite(),
465	+	RecursiveTaskTest.suite(),
466	+	LinkedTransferQueueTest.suite(),
467	+	PhaserTest.suite(),
468	+	ThreadLocalRandomTest.suite(),
469	+	AbstractExecutorServiceTest.suite(),
470	+	AbstractQueueTest.suite(),
471	+	AbstractQueuedSynchronizerTest.suite(),
472	+	AbstractQueuedLongSynchronizerTest.suite(),
473	+	ArrayBlockingQueueTest.suite(),
474	+	ArrayDequeTest.suite(),
475	+	ArrayListTest.suite(),
476	+	AtomicBooleanTest.suite(),
477	+	AtomicIntegerArrayTest.suite(),
478	+	AtomicIntegerFieldUpdaterTest.suite(),
479	+	AtomicIntegerTest.suite(),
480	+	AtomicLongArrayTest.suite(),
481	+	AtomicLongFieldUpdaterTest.suite(),
482	+	AtomicLongTest.suite(),
483	+	AtomicMarkableReferenceTest.suite(),
484	+	AtomicReferenceArrayTest.suite(),
485	+	AtomicReferenceFieldUpdaterTest.suite(),
486	+	AtomicReferenceTest.suite(),
487	+	AtomicStampedReferenceTest.suite(),
488	+	ConcurrentHashMapTest.suite(),
489	+	ConcurrentLinkedDequeTest.suite(),
490	+	ConcurrentLinkedQueueTest.suite(),
491	+	ConcurrentSkipListMapTest.suite(),
492	+	ConcurrentSkipListSubMapTest.suite(),
493	+	ConcurrentSkipListSetTest.suite(),
494	+	ConcurrentSkipListSubSetTest.suite(),
495	+	CopyOnWriteArrayListTest.suite(),
496	+	CopyOnWriteArraySetTest.suite(),
497	+	CountDownLatchTest.suite(),
498	+	CountedCompleterTest.suite(),
499	+	CyclicBarrierTest.suite(),
500	+	DelayQueueTest.suite(),
501	+	EntryTest.suite(),
502	+	ExchangerTest.suite(),
503	+	ExecutorsTest.suite(),
504	+	ExecutorCompletionServiceTest.suite(),
505	+	FutureTaskTest.suite(),
506	+	LinkedBlockingDequeTest.suite(),
507	+	LinkedBlockingQueueTest.suite(),
508	+	LinkedListTest.suite(),
509	+	LockSupportTest.suite(),
510	+	PriorityBlockingQueueTest.suite(),
511	+	PriorityQueueTest.suite(),
512	+	ReentrantLockTest.suite(),
513	+	ReentrantReadWriteLockTest.suite(),
514	+	ScheduledExecutorTest.suite(),
515	+	ScheduledExecutorSubclassTest.suite(),
516	+	SemaphoreTest.suite(),
517	+	SynchronousQueueTest.suite(),
518	+	SystemTest.suite(),
519	+	ThreadLocalTest.suite(),
520	+	ThreadPoolExecutorTest.suite(),
521	+	ThreadPoolExecutorSubclassTest.suite(),
522	+	ThreadTest.suite(),
523	+	TimeUnitTest.suite(),
524	+	TreeMapTest.suite(),
525	+	TreeSetTest.suite(),
526	+	TreeSubMapTest.suite(),
527	+	TreeSubSetTest.suite(),
528	+	VectorTest.suite());
529	+
530	+	// Java8+ test classes
531	+	if (atLeastJava8()) {
532	+	String[] java8TestClassNames = {
533	+	"ArrayDeque8Test",
534	+	"Atomic8Test",
535	+	"CompletableFutureTest",
536	+	"ConcurrentHashMap8Test",
537	+	"CountedCompleter8Test",
538	+	"DoubleAccumulatorTest",
539	+	"DoubleAdderTest",
540	+	"ForkJoinPool8Test",
541	+	"ForkJoinTask8Test",
542	+	"LinkedBlockingDeque8Test",
543	+	"LinkedBlockingQueue8Test",
544	+	"LongAccumulatorTest",
545	+	"LongAdderTest",
546	+	"SplittableRandomTest",
547	+	"StampedLockTest",
548	+	"SubmissionPublisherTest",
549	+	"ThreadLocalRandom8Test",
550	+	"TimeUnit8Test",
551	+	};
552	+	addNamedTestClasses(suite, java8TestClassNames);
553	+	}
554	+
555	+	// Java9+ test classes
556	+	if (atLeastJava9()) {
557	+	String[] java9TestClassNames = {
558	+	"AtomicBoolean9Test",
559	+	"AtomicInteger9Test",
560	+	"AtomicIntegerArray9Test",
561	+	"AtomicLong9Test",
562	+	"AtomicLongArray9Test",
563	+	"AtomicReference9Test",
564	+	"AtomicReferenceArray9Test",
565	+	"ExecutorCompletionService9Test",
566	+	"ForkJoinPool9Test",
567	+	};
568	+	addNamedTestClasses(suite, java9TestClassNames);
569	+	}
570	+
571	+	return suite;
572	+	}
573	+
574	+	/** Returns list of junit-style test method names in given class. */
575	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
576	+	Method[] methods = testClass.getDeclaredMethods();
577	+	ArrayList<String> names = new ArrayList<>(methods.length);
578	+	for (Method method : methods) {
579	+	if (method.getName().startsWith("test")
580	+	&& Modifier.isPublic(method.getModifiers())
581	+	// method.getParameterCount() requires jdk8+
582	+	&& method.getParameterTypes().length == 0) {
583	+	names.add(method.getName());
584	+	}
585	+	}
586	+	return names;
587	+	}
588	+
589	+	/**
590	+	* Returns junit-style testSuite for the given test class, but
591	+	* parameterized by passing extra data to each test.
592	+	*/
593	+	public static <ExtraData> Test parameterizedTestSuite
594	+	(Class<? extends JSR166TestCase> testClass,
595	+	Class<ExtraData> dataClass,
596	+	ExtraData data) {
597	+	try {
598	+	TestSuite suite = new TestSuite();
599	+	Constructor c =
600	+	testClass.getDeclaredConstructor(dataClass, String.class);
601	+	for (String methodName : testMethodNames(testClass))
602	+	suite.addTest((Test) c.newInstance(data, methodName));
603	+	return suite;
604	+	} catch (Exception e) {
605	+	throw new Error(e);
606	+	}
607	+	}
608	+
609	+	/**
610	+	* Returns junit-style testSuite for the jdk8 extension of the
611	+	* given test class, but parameterized by passing extra data to
612	+	* each test.  Uses reflection to allow compilation in jdk7.
613	+	*/
614	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
615	+	(Class<? extends JSR166TestCase> testClass,
616	+	Class<ExtraData> dataClass,
617	+	ExtraData data) {
618	+	if (atLeastJava8()) {
619	+	String name = testClass.getName();
620	+	String name8 = name.replaceAll("Test$", "8Test");
621	+	if (name.equals(name8)) throw new Error(name);
622	+	try {
623	+	return (Test)
624	+	Class.forName(name8)
625	+	.getMethod("testSuite", new Class[] { dataClass })
626	+	.invoke(null, data);
627	+	} catch (Exception e) {
628	+	throw new Error(e);
629	+	}
630	+	} else {
631	+	return new TestSuite();
632	+	}
633	+	}
634	+
635	+	// Delays for timing-dependent tests, in milliseconds.
636
637		public static long SHORT_DELAY_MS;
638		public static long SMALL_DELAY_MS;
639		public static long MEDIUM_DELAY_MS;
640		public static long LONG_DELAY_MS;
641
642	+	private static final long RANDOM_TIMEOUT;
643	+	private static final long RANDOM_EXPIRED_TIMEOUT;
644	+	private static final TimeUnit RANDOM_TIMEUNIT;
645	+	static {
646	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
647	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
648	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
649	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
650	+	TimeUnit[] timeUnits = TimeUnit.values();
651	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
652	+	}
653	+
654	+	/**
655	+	* Returns a timeout for use when any value at all will do.
656	+	*/
657	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
658
659		/**
660	<	* Return the shortest timed delay. This could
661	<	* be reimplmented to use for example a Property.
662	<	*/
660	>	* Returns a timeout that means "no waiting", i.e. not positive.
661	>	*/
662	>	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
663	>
664	>	/**
665	>	* Returns a random non-null TimeUnit.
666	>	*/
667	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
668	>
669	>	/**
670	>	* Returns the shortest timed delay. This can be scaled up for
671	>	* slow machines using the jsr166.delay.factor system property,
672	>	* or via jtreg's -timeoutFactor: flag.
673	>	* http://openjdk.java.net/jtreg/command-help.html
674	>	*/
675		protected long getShortDelay() {
676	<	return 100;
676	>	return (long) (50 * delayFactor);
677		}
678
159	–
679		/**
680	<	* Set delays as multiples of SHORT_DELAY.
680	>	* Sets delays as multiples of SHORT_DELAY.
681		*/
682	<	protected  void setDelays() {
682	>	protected void setDelays() {
683		SHORT_DELAY_MS = getShortDelay();
684	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
684	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
685		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
686	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
686	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
687	>	}
688	>
689	>	private static final long TIMEOUT_DELAY_MS
690	>	= (long) (12.0 * Math.cbrt(delayFactor));
691	>
692	>	/**
693	>	* Returns a timeout in milliseconds to be used in tests that verify
694	>	* that operations block or time out.  We want this to be longer
695	>	* than the OS scheduling quantum, but not too long, so don't scale
696	>	* linearly with delayFactor; we use "crazy" cube root instead.
697	>	*/
698	>	static long timeoutMillis() {
699	>	return TIMEOUT_DELAY_MS;
700		}
701
702		/**
703	<	* Flag set true if any threadAssert methods fail
703	>	* Returns a new Date instance representing a time at least
704	>	* delayMillis milliseconds in the future.
705		*/
706	<	volatile boolean threadFailed;
706	>	Date delayedDate(long delayMillis) {
707	>	// Add 1 because currentTimeMillis is known to round into the past.
708	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
709	>	}
710
711		/**
712	<	* Initialize test to indicate that no thread assertions have failed
712	>	* The first exception encountered if any threadAssertXXX method fails.
713		*/
714	<	public void setUp() {
714	>	private final AtomicReference<Throwable> threadFailure
715	>	= new AtomicReference<>(null);
716	>
717	>	/**
718	>	* Records an exception so that it can be rethrown later in the test
719	>	* harness thread, triggering a test case failure.  Only the first
720	>	* failure is recorded; subsequent calls to this method from within
721	>	* the same test have no effect.
722	>	*/
723	>	public void threadRecordFailure(Throwable t) {
724	>	System.err.println(t);
725	>	dumpTestThreads();
726	>	threadFailure.compareAndSet(null, t);
727	>	}
728	>
729	>	public void setUp() {
730		setDelays();
731	<	threadFailed = false;
731	>	}
732	>
733	>	void tearDownFail(String format, Object... args) {
734	>	String msg = toString() + ": " + String.format(format, args);
735	>	System.err.println(msg);
736	>	dumpTestThreads();
737	>	throw new AssertionFailedError(msg);
738		}
739
740		/**
741	<	* Trigger test case failure if any thread assertions have failed
741	>	* Extra checks that get done for all test cases.
742	>	*
743	>	* Triggers test case failure if any thread assertions have failed,
744	>	* by rethrowing, in the test harness thread, any exception recorded
745	>	* earlier by threadRecordFailure.
746	>	*
747	>	* Triggers test case failure if interrupt status is set in the main thread.
748		*/
749	<	public void tearDown() {
750	<	assertFalse(threadFailed);
749	>	public void tearDown() throws Exception {
750	>	Throwable t = threadFailure.getAndSet(null);
751	>	if (t != null) {
752	>	if (t instanceof Error)
753	>	throw (Error) t;
754	>	else if (t instanceof RuntimeException)
755	>	throw (RuntimeException) t;
756	>	else if (t instanceof Exception)
757	>	throw (Exception) t;
758	>	else {
759	>	AssertionFailedError afe =
760	>	new AssertionFailedError(t.toString());
761	>	afe.initCause(t);
762	>	throw afe;
763	>	}
764	>	}
765	>
766	>	if (Thread.interrupted())
767	>	tearDownFail("interrupt status set in main thread");
768	>
769	>	checkForkJoinPoolThreadLeaks();
770		}
771
772		/**
773	<	* Fail, also setting status to indicate current testcase should fail
774	<	*/
773	>	* Finds missing PoolCleaners
774	>	*/
775	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
776	>	Thread[] survivors = new Thread[7];
777	>	int count = Thread.enumerate(survivors);
778	>	for (int i = 0; i < count; i++) {
779	>	Thread thread = survivors[i];
780	>	String name = thread.getName();
781	>	if (name.startsWith("ForkJoinPool-")) {
782	>	// give thread some time to terminate
783	>	thread.join(LONG_DELAY_MS);
784	>	if (thread.isAlive())
785	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
786	>	thread);
787	>	}
788	>	}
789	>
790	>	if (!ForkJoinPool.commonPool()
791	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
792	>	tearDownFail("ForkJoin common pool thread stuck");
793	>	}
794	>
795	>	/**
796	>	* Just like fail(reason), but additionally recording (using
797	>	* threadRecordFailure) any AssertionFailedError thrown, so that
798	>	* the current testcase will fail.
799	>	*/
800		public void threadFail(String reason) {
801	<	threadFailed = true;
802	<	fail(reason);
801	>	try {
802	>	fail(reason);
803	>	} catch (AssertionFailedError t) {
804	>	threadRecordFailure(t);
805	>	throw t;
806	>	}
807		}
808
809		/**
810	<	* If expression not true, set status to indicate current testcase
811	<	* should fail
812	<	*/
810	>	* Just like assertTrue(b), but additionally recording (using
811	>	* threadRecordFailure) any AssertionFailedError thrown, so that
812	>	* the current testcase will fail.
813	>	*/
814		public void threadAssertTrue(boolean b) {
815	<	if (!b) {
204	<	threadFailed = true;
815	>	try {
816		assertTrue(b);
817	+	} catch (AssertionFailedError t) {
818	+	threadRecordFailure(t);
819	+	throw t;
820		}
821		}
822
823		/**
824	<	* If expression not false, set status to indicate current testcase
825	<	* should fail
826	<	*/
824	>	* Just like assertFalse(b), but additionally recording (using
825	>	* threadRecordFailure) any AssertionFailedError thrown, so that
826	>	* the current testcase will fail.
827	>	*/
828		public void threadAssertFalse(boolean b) {
829	<	if (b) {
215	<	threadFailed = true;
829	>	try {
830		assertFalse(b);
831	+	} catch (AssertionFailedError t) {
832	+	threadRecordFailure(t);
833	+	throw t;
834		}
835		}
836
837		/**
838	<	* If argument not null, set status to indicate current testcase
839	<	* should fail
840	<	*/
838	>	* Just like assertNull(x), but additionally recording (using
839	>	* threadRecordFailure) any AssertionFailedError thrown, so that
840	>	* the current testcase will fail.
841	>	*/
842		public void threadAssertNull(Object x) {
843	<	if (x != null) {
226	<	threadFailed = true;
843	>	try {
844		assertNull(x);
845	+	} catch (AssertionFailedError t) {
846	+	threadRecordFailure(t);
847	+	throw t;
848		}
849		}
850
851		/**
852	<	* If arguments not equal, set status to indicate current testcase
853	<	* should fail
854	<	*/
852	>	* Just like assertEquals(x, y), but additionally recording (using
853	>	* threadRecordFailure) any AssertionFailedError thrown, so that
854	>	* the current testcase will fail.
855	>	*/
856		public void threadAssertEquals(long x, long y) {
857	<	if (x != y) {
237	<	threadFailed = true;
857	>	try {
858		assertEquals(x, y);
859	+	} catch (AssertionFailedError t) {
860	+	threadRecordFailure(t);
861	+	throw t;
862		}
863		}
864
865		/**
866	<	* If arguments not equal, set status to indicate current testcase
867	<	* should fail
868	<	*/
866	>	* Just like assertEquals(x, y), but additionally recording (using
867	>	* threadRecordFailure) any AssertionFailedError thrown, so that
868	>	* the current testcase will fail.
869	>	*/
870		public void threadAssertEquals(Object x, Object y) {
871	<	if (x != y && (x == null || !x.equals(y))) {
248	<	threadFailed = true;
871	>	try {
872		assertEquals(x, y);
873	+	} catch (AssertionFailedError fail) {
874	+	threadRecordFailure(fail);
875	+	throw fail;
876	+	} catch (Throwable fail) {
877	+	threadUnexpectedException(fail);
878		}
879		}
880
881		/**
882	<	* threadFail with message "should throw exception"
883	<	*/
882	>	* Just like assertSame(x, y), but additionally recording (using
883	>	* threadRecordFailure) any AssertionFailedError thrown, so that
884	>	* the current testcase will fail.
885	>	*/
886	>	public void threadAssertSame(Object x, Object y) {
887	>	try {
888	>	assertSame(x, y);
889	>	} catch (AssertionFailedError fail) {
890	>	threadRecordFailure(fail);
891	>	throw fail;
892	>	}
893	>	}
894	>
895	>	/**
896	>	* Calls threadFail with message "should throw exception".
897	>	*/
898		public void threadShouldThrow() {
899	<	threadFailed = true;
900	<	fail("should throw exception");
899	>	threadFail("should throw exception");
900	>	}
901	>
902	>	/**
903	>	* Calls threadFail with message "should throw" + exceptionName.
904	>	*/
905	>	public void threadShouldThrow(String exceptionName) {
906	>	threadFail("should throw " + exceptionName);
907	>	}
908	>
909	>	/**
910	>	* Records the given exception using {@link #threadRecordFailure},
911	>	* then rethrows the exception, wrapping it in an
912	>	* AssertionFailedError if necessary.
913	>	*/
914	>	public void threadUnexpectedException(Throwable t) {
915	>	threadRecordFailure(t);
916	>	t.printStackTrace();
917	>	if (t instanceof RuntimeException)
918	>	throw (RuntimeException) t;
919	>	else if (t instanceof Error)
920	>	throw (Error) t;
921	>	else {
922	>	AssertionFailedError afe =
923	>	new AssertionFailedError("unexpected exception: " + t);
924	>	afe.initCause(t);
925	>	throw afe;
926	>	}
927	>	}
928	>
929	>	/**
930	>	* Delays, via Thread.sleep, for the given millisecond delay, but
931	>	* if the sleep is shorter than specified, may re-sleep or yield
932	>	* until time elapses.  Ensures that the given time, as measured
933	>	* by System.nanoTime(), has elapsed.
934	>	*/
935	>	static void delay(long millis) throws InterruptedException {
936	>	long nanos = millis * (1000 * 1000);
937	>	final long wakeupTime = System.nanoTime() + nanos;
938	>	do {
939	>	if (millis > 0L)
940	>	Thread.sleep(millis);
941	>	else // too short to sleep
942	>	Thread.yield();
943	>	nanos = wakeupTime - System.nanoTime();
944	>	millis = nanos / (1000 * 1000);
945	>	} while (nanos >= 0L);
946	>	}
947	>
948	>	/**
949	>	* Allows use of try-with-resources with per-test thread pools.
950	>	*/
951	>	class PoolCleaner implements AutoCloseable {
952	>	private final ExecutorService pool;
953	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
954	>	public void close() { joinPool(pool); }
955	>	}
956	>
957	>	/**
958	>	* An extension of PoolCleaner that has an action to release the pool.
959	>	*/
960	>	class PoolCleanerWithReleaser extends PoolCleaner {
961	>	private final Runnable releaser;
962	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
963	>	super(pool);
964	>	this.releaser = releaser;
965	>	}
966	>	public void close() {
967	>	try {
968	>	releaser.run();
969	>	} finally {
970	>	super.close();
971	>	}
972	>	}
973	>	}
974	>
975	>	PoolCleaner cleaner(ExecutorService pool) {
976	>	return new PoolCleaner(pool);
977	>	}
978	>
979	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
980	>	return new PoolCleanerWithReleaser(pool, releaser);
981	>	}
982	>
983	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
984	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
985	>	}
986	>
987	>	Runnable releaser(final CountDownLatch latch) {
988	>	return new Runnable() { public void run() {
989	>	do { latch.countDown(); }
990	>	while (latch.getCount() > 0);
991	>	}};
992	>	}
993	>
994	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
995	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
996	>	}
997	>
998	>	Runnable releaser(final AtomicBoolean flag) {
999	>	return new Runnable() { public void run() { flag.set(true); }};
1000	>	}
1001	>
1002	>	/**
1003	>	* Waits out termination of a thread pool or fails doing so.
1004	>	*/
1005	>	void joinPool(ExecutorService pool) {
1006	>	try {
1007	>	pool.shutdown();
1008	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1009	>	try {
1010	>	threadFail("ExecutorService " + pool +
1011	>	" did not terminate in a timely manner");
1012	>	} finally {
1013	>	// last resort, for the benefit of subsequent tests
1014	>	pool.shutdownNow();
1015	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1016	>	}
1017	>	}
1018	>	} catch (SecurityException ok) {
1019	>	// Allowed in case test doesn't have privs
1020	>	} catch (InterruptedException fail) {
1021	>	threadFail("Unexpected InterruptedException");
1022	>	}
1023	>	}
1024	>
1025	>	/**
1026	>	* Like Runnable, but with the freedom to throw anything.
1027	>	* junit folks had the same idea:
1028	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1029	>	*/
1030	>	interface Action { public void run() throws Throwable; }
1031	>
1032	>	/**
1033	>	* Runs all the given actions in parallel, failing if any fail.
1034	>	* Useful for running multiple variants of tests that are
1035	>	* necessarily individually slow because they must block.
1036	>	*/
1037	>	void testInParallel(Action ... actions) {
1038	>	ExecutorService pool = Executors.newCachedThreadPool();
1039	>	try (PoolCleaner cleaner = cleaner(pool)) {
1040	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1041	>	for (final Action action : actions)
1042	>	futures.add(pool.submit(new CheckedRunnable() {
1043	>	public void realRun() throws Throwable { action.run();}}));
1044	>	for (Future<?> future : futures)
1045	>	try {
1046	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1047	>	} catch (ExecutionException ex) {
1048	>	threadUnexpectedException(ex.getCause());
1049	>	} catch (Exception ex) {
1050	>	threadUnexpectedException(ex);
1051	>	}
1052	>	}
1053	>	}
1054	>
1055	>	/**
1056	>	* A debugging tool to print stack traces of most threads, as jstack does.
1057	>	* Uninteresting threads are filtered out.
1058	>	*/
1059	>	static void dumpTestThreads() {
1060	>	SecurityManager sm = System.getSecurityManager();
1061	>	if (sm != null) {
1062	>	try {
1063	>	System.setSecurityManager(null);
1064	>	} catch (SecurityException giveUp) {
1065	>	return;
1066	>	}
1067	>	}
1068	>
1069	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1070	>	System.err.println("------ stacktrace dump start ------");
1071	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1072	>	final String name = info.getThreadName();
1073	>	String lockName;
1074	>	if ("Signal Dispatcher".equals(name))
1075	>	continue;
1076	>	if ("Reference Handler".equals(name)
1077	>	&& (lockName = info.getLockName()) != null
1078	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1079	>	continue;
1080	>	if ("Finalizer".equals(name)
1081	>	&& (lockName = info.getLockName()) != null
1082	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1083	>	continue;
1084	>	if ("checkForWedgedTest".equals(name))
1085	>	continue;
1086	>	System.err.print(info);
1087	>	}
1088	>	System.err.println("------ stacktrace dump end ------");
1089	>
1090	>	if (sm != null) System.setSecurityManager(sm);
1091	>	}
1092	>
1093	>	/**
1094	>	* Checks that thread eventually enters the expected blocked thread state.
1095	>	*/
1096	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1097	>	// always sleep at least 1 ms, with high probability avoiding
1098	>	// transitory states
1099	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1100	>	try { delay(1); }
1101	>	catch (InterruptedException fail) {
1102	>	fail("Unexpected InterruptedException");
1103	>	}
1104	>	Thread.State s = thread.getState();
1105	>	if (s == expected)
1106	>	return;
1107	>	else if (s == Thread.State.TERMINATED)
1108	>	fail("Unexpected thread termination");
1109	>	}
1110	>	fail("timed out waiting for thread to enter thread state " + expected);
1111		}
1112
1113		/**
1114	<	* threadFail with message "Unexpected exception"
1114	>	* Checks that thread does not terminate within the default
1115	>	* millisecond delay of {@code timeoutMillis()}.
1116	>	* TODO: REMOVEME
1117		*/
1118	<	public void threadUnexpectedException() {
1119	<	threadFailed = true;
266	<	fail("Unexpected exception");
1118	>	void assertThreadStaysAlive(Thread thread) {
1119	>	assertThreadStaysAlive(thread, timeoutMillis());
1120		}
1121
1122	+	/**
1123	+	* Checks that thread does not terminate within the given millisecond delay.
1124	+	* TODO: REMOVEME
1125	+	*/
1126	+	void assertThreadStaysAlive(Thread thread, long millis) {
1127	+	try {
1128	+	// No need to optimize the failing case via Thread.join.
1129	+	delay(millis);
1130	+	assertTrue(thread.isAlive());
1131	+	} catch (InterruptedException fail) {
1132	+	threadFail("Unexpected InterruptedException");
1133	+	}
1134	+	}
1135	+
1136	+	/**
1137	+	* Checks that the threads do not terminate within the default
1138	+	* millisecond delay of {@code timeoutMillis()}.
1139	+	* TODO: REMOVEME
1140	+	*/
1141	+	void assertThreadsStayAlive(Thread... threads) {
1142	+	assertThreadsStayAlive(timeoutMillis(), threads);
1143	+	}
1144
1145		/**
1146	<	* Wait out termination of a thread pool or fail doing so
1146	>	* Checks that the threads do not terminate within the given millisecond delay.
1147	>	* TODO: REMOVEME
1148		*/
1149	<	public void joinPool(ExecutorService exec) {
1149	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1150		try {
1151	<	exec.shutdown();
1152	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
1153	<	} catch(InterruptedException ie) {
1154	<	fail("Unexpected exception");
1151	>	// No need to optimize the failing case via Thread.join.
1152	>	delay(millis);
1153	>	for (Thread thread : threads)
1154	>	assertTrue(thread.isAlive());
1155	>	} catch (InterruptedException fail) {
1156	>	threadFail("Unexpected InterruptedException");
1157		}
1158		}
1159
1160	+	/**
1161	+	* Checks that future.get times out, with the default timeout of
1162	+	* {@code timeoutMillis()}.
1163	+	*/
1164	+	void assertFutureTimesOut(Future future) {
1165	+	assertFutureTimesOut(future, timeoutMillis());
1166	+	}
1167
1168		/**
1169	<	* fail with message "should throw exception"
1170	<	*/
1169	>	* Checks that future.get times out, with the given millisecond timeout.
1170	>	*/
1171	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1172	>	long startTime = System.nanoTime();
1173	>	try {
1174	>	future.get(timeoutMillis, MILLISECONDS);
1175	>	shouldThrow();
1176	>	} catch (TimeoutException success) {
1177	>	} catch (Exception fail) {
1178	>	threadUnexpectedException(fail);
1179	>	} finally { future.cancel(true); }
1180	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1181	>	}
1182	>
1183	>	/**
1184	>	* Fails with message "should throw exception".
1185	>	*/
1186		public void shouldThrow() {
1187		fail("Should throw exception");
1188		}
1189
1190		/**
1191	<	* fail with message "Unexpected exception"
1191	>	* Fails with message "should throw " + exceptionName.
1192		*/
1193	<	public void unexpectedException() {
1194	<	fail("Unexpected exception");
1193	>	public void shouldThrow(String exceptionName) {
1194	>	fail("Should throw " + exceptionName);
1195		}
1196
1197	+	/**
1198	+	* The maximum number of consecutive spurious wakeups we should
1199	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1200	+	*/
1201	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1202
1203		/**
1204		* The number of elements to place in collections, arrays, etc.
1205		*/
1206	<	static final int SIZE = 20;
1206	>	public static final int SIZE = 20;
1207
1208		// Some convenient Integer constants
1209
1210	<	static final Integer zero = new Integer(0);
1211	<	static final Integer one = new Integer(1);
1212	<	static final Integer two = new Integer(2);
1213	<	static final Integer three  = new Integer(3);
1214	<	static final Integer four  = new Integer(4);
1215	<	static final Integer five  = new Integer(5);
1216	<	static final Integer six = new Integer(6);
1217	<	static final Integer seven = new Integer(7);
1218	<	static final Integer eight = new Integer(8);
1219	<	static final Integer nine = new Integer(9);
1220	<	static final Integer m1  = new Integer(-1);
1221	<	static final Integer m2  = new Integer(-2);
1222	<	static final Integer m3  = new Integer(-3);
1223	<	static final Integer m4 = new Integer(-4);
1224	<	static final Integer m5 = new Integer(-5);
1225	<	static final Integer m10 = new Integer(-10);
1210	>	public static final Integer zero  = new Integer(0);
1211	>	public static final Integer one   = new Integer(1);
1212	>	public static final Integer two   = new Integer(2);
1213	>	public static final Integer three = new Integer(3);
1214	>	public static final Integer four  = new Integer(4);
1215	>	public static final Integer five  = new Integer(5);
1216	>	public static final Integer six   = new Integer(6);
1217	>	public static final Integer seven = new Integer(7);
1218	>	public static final Integer eight = new Integer(8);
1219	>	public static final Integer nine  = new Integer(9);
1220	>	public static final Integer m1  = new Integer(-1);
1221	>	public static final Integer m2  = new Integer(-2);
1222	>	public static final Integer m3  = new Integer(-3);
1223	>	public static final Integer m4  = new Integer(-4);
1224	>	public static final Integer m5  = new Integer(-5);
1225	>	public static final Integer m6  = new Integer(-6);
1226	>	public static final Integer m10 = new Integer(-10);
1227	>
1228	>	/**
1229	>	* Runs Runnable r with a security policy that permits precisely
1230	>	* the specified permissions.  If there is no current security
1231	>	* manager, the runnable is run twice, both with and without a
1232	>	* security manager.  We require that any security manager permit
1233	>	* getPolicy/setPolicy.
1234	>	*/
1235	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1236	>	SecurityManager sm = System.getSecurityManager();
1237	>	if (sm == null) {
1238	>	r.run();
1239	>	}
1240	>	runWithSecurityManagerWithPermissions(r, permissions);
1241	>	}
1242	>
1243	>	/**
1244	>	* Runs Runnable r with a security policy that permits precisely
1245	>	* the specified permissions.  If there is no current security
1246	>	* manager, a temporary one is set for the duration of the
1247	>	* Runnable.  We require that any security manager permit
1248	>	* getPolicy/setPolicy.
1249	>	*/
1250	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1251	>	Permission... permissions) {
1252	>	SecurityManager sm = System.getSecurityManager();
1253	>	if (sm == null) {
1254	>	Policy savedPolicy = Policy.getPolicy();
1255	>	try {
1256	>	Policy.setPolicy(permissivePolicy());
1257	>	System.setSecurityManager(new SecurityManager());
1258	>	runWithSecurityManagerWithPermissions(r, permissions);
1259	>	} finally {
1260	>	System.setSecurityManager(null);
1261	>	Policy.setPolicy(savedPolicy);
1262	>	}
1263	>	} else {
1264	>	Policy savedPolicy = Policy.getPolicy();
1265	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1266	>	Policy.setPolicy(policy);
1267	>
1268	>	try {
1269	>	r.run();
1270	>	} finally {
1271	>	policy.addPermission(new SecurityPermission("setPolicy"));
1272	>	Policy.setPolicy(savedPolicy);
1273	>	}
1274	>	}
1275	>	}
1276
1277	+	/**
1278	+	* Runs a runnable without any permissions.
1279	+	*/
1280	+	public void runWithoutPermissions(Runnable r) {
1281	+	runWithPermissions(r);
1282	+	}
1283
1284		/**
1285		* A security policy where new permissions can be dynamically added
1286		* or all cleared.
1287		*/
1288	<	static class AdjustablePolicy extends java.security.Policy {
1288	>	public static class AdjustablePolicy extends java.security.Policy {
1289		Permissions perms = new Permissions();
1290	<	AdjustablePolicy() { }
1290	>	AdjustablePolicy(Permission... permissions) {
1291	>	for (Permission permission : permissions)
1292	>	perms.add(permission);
1293	>	}
1294		void addPermission(Permission perm) { perms.add(perm); }
1295		void clearPermissions() { perms = new Permissions(); }
1296	<	public PermissionCollection getPermissions(CodeSource cs) {
1297	<	return perms;
1298	<	}
1299	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1300	<	return perms;
1301	<	}
1302	<	public boolean implies(ProtectionDomain pd, Permission p) {
1303	<	return perms.implies(p);
1304	<	}
1305	<	public void refresh() {}
1296	>	public PermissionCollection getPermissions(CodeSource cs) {
1297	>	return perms;
1298	>	}
1299	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1300	>	return perms;
1301	>	}
1302	>	public boolean implies(ProtectionDomain pd, Permission p) {
1303	>	return perms.implies(p);
1304	>	}
1305	>	public void refresh() {}
1306	>	public String toString() {
1307	>	List<Permission> ps = new ArrayList<>();
1308	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1309	>	ps.add(e.nextElement());
1310	>	return "AdjustablePolicy with permissions " + ps;
1311	>	}
1312		}
1313
1314	<
1315	<	// Some convenient Runnable classes
1316	<
1317	<	static class NoOpRunnable implements Runnable {
1318	<	public void run() {}
1314	>	/**
1315	>	* Returns a policy containing all the permissions we ever need.
1316	>	*/
1317	>	public static Policy permissivePolicy() {
1318	>	return new AdjustablePolicy
1319	>	// Permissions j.u.c. needs directly
1320	>	(new RuntimePermission("modifyThread"),
1321	>	new RuntimePermission("getClassLoader"),
1322	>	new RuntimePermission("setContextClassLoader"),
1323	>	// Permissions needed to change permissions!
1324	>	new SecurityPermission("getPolicy"),
1325	>	new SecurityPermission("setPolicy"),
1326	>	new RuntimePermission("setSecurityManager"),
1327	>	// Permissions needed by the junit test harness
1328	>	new RuntimePermission("accessDeclaredMembers"),
1329	>	new PropertyPermission("*", "read"),
1330	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1331		}
1332
1333	<	static class NoOpCallable implements Callable {
1334	<	public Object call() { return Boolean.TRUE; }
1333	>	/**
1334	>	* Sleeps until the given time has elapsed.
1335	>	* Throws AssertionFailedError if interrupted.
1336	>	*/
1337	>	static void sleep(long millis) {
1338	>	try {
1339	>	delay(millis);
1340	>	} catch (InterruptedException fail) {
1341	>	AssertionFailedError afe =
1342	>	new AssertionFailedError("Unexpected InterruptedException");
1343	>	afe.initCause(fail);
1344	>	throw afe;
1345	>	}
1346		}
1347
1348	<	class ShortRunnable implements Runnable {
1349	<	public void run() {
1350	<	try {
1351	<	Thread.sleep(SHORT_DELAY_MS);
1352	<	}
1353	<	catch(Exception e) {
1354	<	threadUnexpectedException();
1348	>	/**
1349	>	* Spin-waits up to the specified number of milliseconds for the given
1350	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1351	>	*/
1352	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1353	>	long startTime = 0L;
1354	>	for (;;) {
1355	>	Thread.State s = thread.getState();
1356	>	if (s == Thread.State.BLOCKED ||
1357	>	s == Thread.State.WAITING ||
1358	>	s == Thread.State.TIMED_WAITING)
1359	>	return;
1360	>	else if (s == Thread.State.TERMINATED)
1361	>	fail("Unexpected thread termination");
1362	>	else if (startTime == 0L)
1363	>	startTime = System.nanoTime();
1364	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1365	>	threadAssertTrue(thread.isAlive());
1366	>	fail("timed out waiting for thread to enter wait state");
1367		}
1368	+	Thread.yield();
1369		}
1370		}
1371
1372	<	class ShortInterruptedRunnable implements Runnable {
1373	<	public void run() {
1374	<	try {
1375	<	Thread.sleep(SHORT_DELAY_MS);
1376	<	threadShouldThrow();
1372	>	/**
1373	>	* Spin-waits up to the specified number of milliseconds for the given
1374	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1375	>	* and additionally satisfy the given condition.
1376	>	*/
1377	>	void waitForThreadToEnterWaitState(
1378	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1379	>	long startTime = 0L;
1380	>	for (;;) {
1381	>	Thread.State s = thread.getState();
1382	>	if (s == Thread.State.BLOCKED ||
1383	>	s == Thread.State.WAITING ||
1384	>	s == Thread.State.TIMED_WAITING) {
1385	>	try {
1386	>	if (waitingForGodot.call())
1387	>	return;
1388	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1389	>	}
1390	>	else if (s == Thread.State.TERMINATED)
1391	>	fail("Unexpected thread termination");
1392	>	else if (startTime == 0L)
1393	>	startTime = System.nanoTime();
1394	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1395	>	threadAssertTrue(thread.isAlive());
1396	>	fail("timed out waiting for thread to enter wait state");
1397		}
1398	<	catch(InterruptedException success) {
1398	>	Thread.yield();
1399	>	}
1400	>	}
1401	>
1402	>	/**
1403	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1404	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1405	>	*/
1406	>	void waitForThreadToEnterWaitState(Thread thread) {
1407	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1408	>	}
1409	>
1410	>	/**
1411	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1412	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1413	>	* and additionally satisfy the given condition.
1414	>	*/
1415	>	void waitForThreadToEnterWaitState(
1416	>	Thread thread, Callable<Boolean> waitingForGodot) {
1417	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1418	>	}
1419	>
1420	>	/**
1421	>	* Returns the number of milliseconds since time given by
1422	>	* startNanoTime, which must have been previously returned from a
1423	>	* call to {@link System#nanoTime()}.
1424	>	*/
1425	>	static long millisElapsedSince(long startNanoTime) {
1426	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1427	>	}
1428	>
1429	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1430	>	//         long startTime = System.nanoTime();
1431	>	//         try {
1432	>	//             r.run();
1433	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1434	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1435	>	//             throw new AssertionFailedError("did not return promptly");
1436	>	//     }
1437	>
1438	>	//     void assertTerminatesPromptly(Runnable r) {
1439	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1440	>	//     }
1441	>
1442	>	/**
1443	>	* Checks that timed f.get() returns the expected value, and does not
1444	>	* wait for the timeout to elapse before returning.
1445	>	*/
1446	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1447	>	long startTime = System.nanoTime();
1448	>	try {
1449	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1450	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1451	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1452	>	throw new AssertionFailedError("timed get did not return promptly");
1453	>	}
1454	>
1455	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1456	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1457	>	}
1458	>
1459	>	/**
1460	>	* Returns a new started daemon Thread running the given runnable.
1461	>	*/
1462	>	Thread newStartedThread(Runnable runnable) {
1463	>	Thread t = new Thread(runnable);
1464	>	t.setDaemon(true);
1465	>	t.start();
1466	>	return t;
1467	>	}
1468	>
1469	>	/**
1470	>	* Waits for the specified time (in milliseconds) for the thread
1471	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1472	>	* the thread (in the hope that it may terminate later) and fails.
1473	>	*/
1474	>	void awaitTermination(Thread t, long timeoutMillis) {
1475	>	try {
1476	>	t.join(timeoutMillis);
1477	>	} catch (InterruptedException fail) {
1478	>	threadUnexpectedException(fail);
1479	>	} finally {
1480	>	if (t.getState() != Thread.State.TERMINATED) {
1481	>	t.interrupt();
1482	>	threadFail("timed out waiting for thread to terminate");
1483		}
1484		}
1485		}
1486
1487	<	class SmallRunnable implements Runnable {
1488	<	public void run() {
1487	>	/**
1488	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1489	>	* terminate (using {@link Thread#join(long)}), else interrupts
1490	>	* the thread (in the hope that it may terminate later) and fails.
1491	>	*/
1492	>	void awaitTermination(Thread t) {
1493	>	awaitTermination(t, LONG_DELAY_MS);
1494	>	}
1495	>
1496	>	// Some convenient Runnable classes
1497	>
1498	>	public abstract class CheckedRunnable implements Runnable {
1499	>	protected abstract void realRun() throws Throwable;
1500	>
1501	>	public final void run() {
1502		try {
1503	<	Thread.sleep(SMALL_DELAY_MS);
1504	<	}
1505	<	catch(Exception e) {
383	<	threadUnexpectedException();
1503	>	realRun();
1504	>	} catch (Throwable fail) {
1505	>	threadUnexpectedException(fail);
1506		}
1507		}
1508		}
1509
1510	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1511	<	public void run() {
1510	>	public abstract class RunnableShouldThrow implements Runnable {
1511	>	protected abstract void realRun() throws Throwable;
1512	>
1513	>	final Class<?> exceptionClass;
1514	>
1515	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1516	>	this.exceptionClass = exceptionClass;
1517	>	}
1518	>
1519	>	public final void run() {
1520		try {
1521	<	Thread.sleep(SMALL_DELAY_MS);
1522	<	}
1523	<	catch(Exception e) {
1521	>	realRun();
1522	>	threadShouldThrow(exceptionClass.getSimpleName());
1523	>	} catch (Throwable t) {
1524	>	if (! exceptionClass.isInstance(t))
1525	>	threadUnexpectedException(t);
1526		}
1527		}
1528		}
1529
1530	<	class SmallCallable implements Callable {
1531	<	public Object call() {
1530	>	public abstract class ThreadShouldThrow extends Thread {
1531	>	protected abstract void realRun() throws Throwable;
1532	>
1533	>	final Class<?> exceptionClass;
1534	>
1535	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1536	>	this.exceptionClass = exceptionClass;
1537	>	}
1538	>
1539	>	public final void run() {
1540		try {
1541	<	Thread.sleep(SMALL_DELAY_MS);
1541	>	realRun();
1542	>	threadShouldThrow(exceptionClass.getSimpleName());
1543	>	} catch (Throwable t) {
1544	>	if (! exceptionClass.isInstance(t))
1545	>	threadUnexpectedException(t);
1546		}
403	–	catch(Exception e) {
404	–	threadUnexpectedException();
405	–	}
406	–	return Boolean.TRUE;
1547		}
1548		}
1549
1550	<	class SmallInterruptedRunnable implements Runnable {
1551	<	public void run() {
1550	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1551	>	protected abstract void realRun() throws Throwable;
1552	>
1553	>	public final void run() {
1554		try {
1555	<	Thread.sleep(SMALL_DELAY_MS);
1556	<	threadShouldThrow();
1557	<	}
1558	<	catch(InterruptedException success) {
1555	>	realRun();
1556	>	threadShouldThrow("InterruptedException");
1557	>	} catch (InterruptedException success) {
1558	>	threadAssertFalse(Thread.interrupted());
1559	>	} catch (Throwable fail) {
1560	>	threadUnexpectedException(fail);
1561		}
1562		}
1563		}
1564
1565	+	public abstract class CheckedCallable<T> implements Callable<T> {
1566	+	protected abstract T realCall() throws Throwable;
1567
1568	<	class MediumRunnable implements Runnable {
423	<	public void run() {
1568	>	public final T call() {
1569		try {
1570	<	Thread.sleep(MEDIUM_DELAY_MS);
1571	<	}
1572	<	catch(Exception e) {
1573	<	threadUnexpectedException();
1570	>	return realCall();
1571	>	} catch (Throwable fail) {
1572	>	threadUnexpectedException(fail);
1573	>	return null;
1574		}
1575		}
1576		}
1577
1578	<	class MediumInterruptedRunnable implements Runnable {
1579	<	public void run() {
1578	>	public abstract class CheckedInterruptedCallable<T>
1579	>	implements Callable<T> {
1580	>	protected abstract T realCall() throws Throwable;
1581	>
1582	>	public final T call() {
1583		try {
1584	<	Thread.sleep(MEDIUM_DELAY_MS);
1585	<	threadShouldThrow();
1586	<	}
1587	<	catch(InterruptedException success) {
1584	>	T result = realCall();
1585	>	threadShouldThrow("InterruptedException");
1586	>	return result;
1587	>	} catch (InterruptedException success) {
1588	>	threadAssertFalse(Thread.interrupted());
1589	>	} catch (Throwable fail) {
1590	>	threadUnexpectedException(fail);
1591		}
1592	+	return null;
1593		}
1594		}
1595
1596	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1597	<	public void run() {
1596	>	public static class NoOpRunnable implements Runnable {
1597	>	public void run() {}
1598	>	}
1599	>
1600	>	public static class NoOpCallable implements Callable {
1601	>	public Object call() { return Boolean.TRUE; }
1602	>	}
1603	>
1604	>	public static final String TEST_STRING = "a test string";
1605	>
1606	>	public static class StringTask implements Callable<String> {
1607	>	final String value;
1608	>	public StringTask() { this(TEST_STRING); }
1609	>	public StringTask(String value) { this.value = value; }
1610	>	public String call() { return value; }
1611	>	}
1612	>
1613	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1614	>	return new CheckedCallable<String>() {
1615	>	protected String realCall() {
1616	>	try {
1617	>	latch.await();
1618	>	} catch (InterruptedException quittingTime) {}
1619	>	return TEST_STRING;
1620	>	}};
1621	>	}
1622	>
1623	>	public Runnable countDowner(final CountDownLatch latch) {
1624	>	return new CheckedRunnable() {
1625	>	public void realRun() throws InterruptedException {
1626	>	latch.countDown();
1627	>	}};
1628	>	}
1629	>
1630	>	class LatchAwaiter extends CheckedRunnable {
1631	>	static final int NEW = 0;
1632	>	static final int RUNNING = 1;
1633	>	static final int DONE = 2;
1634	>	final CountDownLatch latch;
1635	>	int state = NEW;
1636	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1637	>	public void realRun() throws InterruptedException {
1638	>	state = 1;
1639	>	await(latch);
1640	>	state = 2;
1641	>	}
1642	>	}
1643	>
1644	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1645	>	return new LatchAwaiter(latch);
1646	>	}
1647	>
1648	>	public void await(CountDownLatch latch, long timeoutMillis) {
1649	>	try {
1650	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1651	>	fail("timed out waiting for CountDownLatch for "
1652	>	+ (timeoutMillis/1000) + " sec");
1653	>	} catch (Throwable fail) {
1654	>	threadUnexpectedException(fail);
1655	>	}
1656	>	}
1657	>
1658	>	public void await(CountDownLatch latch) {
1659	>	await(latch, LONG_DELAY_MS);
1660	>	}
1661	>
1662	>	public void await(Semaphore semaphore) {
1663	>	try {
1664	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1665	>	fail("timed out waiting for Semaphore for "
1666	>	+ (LONG_DELAY_MS/1000) + " sec");
1667	>	} catch (Throwable fail) {
1668	>	threadUnexpectedException(fail);
1669	>	}
1670	>	}
1671	>
1672	>	public void await(CyclicBarrier barrier) {
1673	>	try {
1674	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1675	>	} catch (Throwable fail) {
1676	>	threadUnexpectedException(fail);
1677	>	}
1678	>	}
1679	>
1680	>	//     /**
1681	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1682	>	//      */
1683	>	//     public void await(AtomicBoolean flag) {
1684	>	//         await(flag, LONG_DELAY_MS);
1685	>	//     }
1686	>
1687	>	//     /**
1688	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1689	>	//      */
1690	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1691	>	//         long startTime = System.nanoTime();
1692	>	//         while (!flag.get()) {
1693	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1694	>	//                 throw new AssertionFailedError("timed out");
1695	>	//             Thread.yield();
1696	>	//         }
1697	>	//     }
1698	>
1699	>	public static class NPETask implements Callable<String> {
1700	>	public String call() { throw new NullPointerException(); }
1701	>	}
1702	>
1703	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1704	>	protected void realRun() {
1705		try {
1706	<	Thread.sleep(MEDIUM_DELAY_MS);
1707	<	}
449	<	catch(InterruptedException success) {
450	<	}
1706	>	delay(SMALL_DELAY_MS);
1707	>	} catch (InterruptedException ok) {}
1708		}
1709		}
1710
1711	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1712	+	return new CheckedRunnable() {
1713	+	protected void realRun() {
1714	+	try {
1715	+	delay(timeoutMillis);
1716	+	} catch (InterruptedException ok) {}
1717	+	}};
1718	+	}
1719	+
1720		/**
1721		* For use as ThreadFactory in constructors
1722		*/
1723	<	static class SimpleThreadFactory implements ThreadFactory{
1724	<	public Thread newThread(Runnable r){
1723	>	public static class SimpleThreadFactory implements ThreadFactory {
1724	>	public Thread newThread(Runnable r) {
1725		return new Thread(r);
1726	<	}
1726	>	}
1727	>	}
1728	>
1729	>	public interface TrackedRunnable extends Runnable {
1730	>	boolean isDone();
1731		}
1732
1733	<	static class TrackedShortRunnable implements Runnable {
1734	<	volatile boolean done = false;
1733	>	public static class TrackedNoOpRunnable implements Runnable {
1734	>	public volatile boolean done = false;
1735		public void run() {
1736	+	done = true;
1737	+	}
1738	+	}
1739	+
1740	+	/**
1741	+	* Analog of CheckedRunnable for RecursiveAction
1742	+	*/
1743	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1744	+	protected abstract void realCompute() throws Throwable;
1745	+
1746	+	@Override protected final void compute() {
1747		try {
1748	<	Thread.sleep(SMALL_DELAY_MS);
1749	<	done = true;
1750	<	} catch(Exception e){
1748	>	realCompute();
1749	>	} catch (Throwable fail) {
1750	>	threadUnexpectedException(fail);
1751		}
1752		}
1753		}
1754
1755	<	static class TrackedMediumRunnable implements Runnable {
1756	<	volatile boolean done = false;
1757	<	public void run() {
1755	>	/**
1756	>	* Analog of CheckedCallable for RecursiveTask
1757	>	*/
1758	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1759	>	protected abstract T realCompute() throws Throwable;
1760	>
1761	>	@Override protected final T compute() {
1762		try {
1763	<	Thread.sleep(MEDIUM_DELAY_MS);
1764	<	done = true;
1765	<	} catch(Exception e){
1763	>	return realCompute();
1764	>	} catch (Throwable fail) {
1765	>	threadUnexpectedException(fail);
1766	>	return null;
1767		}
1768		}
1769		}
1770
1771	<	static class TrackedLongRunnable implements Runnable {
1772	<	volatile boolean done = false;
1773	<	public void run() {
1771	>	/**
1772	>	* For use as RejectedExecutionHandler in constructors
1773	>	*/
1774	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1775	>	public void rejectedExecution(Runnable r,
1776	>	ThreadPoolExecutor executor) {}
1777	>	}
1778	>
1779	>	/**
1780	>	* A CyclicBarrier that uses timed await and fails with
1781	>	* AssertionFailedErrors instead of throwing checked exceptions.
1782	>	*/
1783	>	public static class CheckedBarrier extends CyclicBarrier {
1784	>	public CheckedBarrier(int parties) { super(parties); }
1785	>
1786	>	public int await() {
1787		try {
1788	<	Thread.sleep(LONG_DELAY_MS);
1789	<	done = true;
1790	<	} catch(Exception e){
1788	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1789	>	} catch (TimeoutException timedOut) {
1790	>	throw new AssertionFailedError("timed out");
1791	>	} catch (Exception fail) {
1792	>	AssertionFailedError afe =
1793	>	new AssertionFailedError("Unexpected exception: " + fail);
1794	>	afe.initCause(fail);
1795	>	throw afe;
1796		}
1797		}
1798		}
1799
1800	<	static class TrackedNoOpRunnable implements Runnable {
1801	<	volatile boolean done = false;
1802	<	public void run() {
1803	<	done = true;
1800	>	void checkEmpty(BlockingQueue q) {
1801	>	try {
1802	>	assertTrue(q.isEmpty());
1803	>	assertEquals(0, q.size());
1804	>	assertNull(q.peek());
1805	>	assertNull(q.poll());
1806	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1807	>	assertEquals(q.toString(), "[]");
1808	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1809	>	assertFalse(q.iterator().hasNext());
1810	>	try {
1811	>	q.element();
1812	>	shouldThrow();
1813	>	} catch (NoSuchElementException success) {}
1814	>	try {
1815	>	q.iterator().next();
1816	>	shouldThrow();
1817	>	} catch (NoSuchElementException success) {}
1818	>	try {
1819	>	q.remove();
1820	>	shouldThrow();
1821	>	} catch (NoSuchElementException success) {}
1822	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1823	>	}
1824	>
1825	>	void assertSerialEquals(Object x, Object y) {
1826	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1827	>	}
1828	>
1829	>	void assertNotSerialEquals(Object x, Object y) {
1830	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1831	>	}
1832	>
1833	>	byte[] serialBytes(Object o) {
1834	>	try {
1835	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1836	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1837	>	oos.writeObject(o);
1838	>	oos.flush();
1839	>	oos.close();
1840	>	return bos.toByteArray();
1841	>	} catch (Throwable fail) {
1842	>	threadUnexpectedException(fail);
1843	>	return new byte[0];
1844		}
1845		}
1846
1847	<	static class TrackedCallable implements Callable {
1848	<	volatile boolean done = false;
1849	<	public Object call() {
1850	<	try {
1851	<	Thread.sleep(SMALL_DELAY_MS);
1852	<	done = true;
1853	<	} catch(Exception e){
1847	>	void assertImmutable(final Object o) {
1848	>	if (o instanceof Collection) {
1849	>	assertThrows(
1850	>	UnsupportedOperationException.class,
1851	>	new Runnable() { public void run() {
1852	>	((Collection) o).add(null);}});
1853	>	}
1854	>	}
1855	>
1856	>	@SuppressWarnings("unchecked")
1857	>	<T> T serialClone(T o) {
1858	>	try {
1859	>	ObjectInputStream ois = new ObjectInputStream
1860	>	(new ByteArrayInputStream(serialBytes(o)));
1861	>	T clone = (T) ois.readObject();
1862	>	if (o == clone) assertImmutable(o);
1863	>	assertSame(o.getClass(), clone.getClass());
1864	>	return clone;
1865	>	} catch (Throwable fail) {
1866	>	threadUnexpectedException(fail);
1867	>	return null;
1868	>	}
1869	>	}
1870	>
1871	>	/**
1872	>	* A version of serialClone that leaves error handling (for
1873	>	* e.g. NotSerializableException) up to the caller.
1874	>	*/
1875	>	@SuppressWarnings("unchecked")
1876	>	<T> T serialClonePossiblyFailing(T o)
1877	>	throws ReflectiveOperationException, java.io.IOException {
1878	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1879	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1880	>	oos.writeObject(o);
1881	>	oos.flush();
1882	>	oos.close();
1883	>	ObjectInputStream ois = new ObjectInputStream
1884	>	(new ByteArrayInputStream(bos.toByteArray()));
1885	>	T clone = (T) ois.readObject();
1886	>	if (o == clone) assertImmutable(o);
1887	>	assertSame(o.getClass(), clone.getClass());
1888	>	return clone;
1889	>	}
1890	>
1891	>	/**
1892	>	* If o implements Cloneable and has a public clone method,
1893	>	* returns a clone of o, else null.
1894	>	*/
1895	>	@SuppressWarnings("unchecked")
1896	>	<T> T cloneableClone(T o) {
1897	>	if (!(o instanceof Cloneable)) return null;
1898	>	final T clone;
1899	>	try {
1900	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1901	>	} catch (NoSuchMethodException ok) {
1902	>	return null;
1903	>	} catch (ReflectiveOperationException unexpected) {
1904	>	throw new Error(unexpected);
1905	>	}
1906	>	assertNotSame(o, clone); // not 100% guaranteed by spec
1907	>	assertSame(o.getClass(), clone.getClass());
1908	>	return clone;
1909	>	}
1910	>
1911	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1912	>	Runnable... throwingActions) {
1913	>	for (Runnable throwingAction : throwingActions) {
1914	>	boolean threw = false;
1915	>	try { throwingAction.run(); }
1916	>	catch (Throwable t) {
1917	>	threw = true;
1918	>	if (!expectedExceptionClass.isInstance(t)) {
1919	>	AssertionFailedError afe =
1920	>	new AssertionFailedError
1921	>	("Expected " + expectedExceptionClass.getName() +
1922	>	", got " + t.getClass().getName());
1923	>	afe.initCause(t);
1924	>	threadUnexpectedException(afe);
1925	>	}
1926		}
1927	<	return Boolean.TRUE;
1927	>	if (!threw)
1928	>	shouldThrow(expectedExceptionClass.getName());
1929		}
1930		}
1931
1932	+	public void assertIteratorExhausted(Iterator<?> it) {
1933	+	try {
1934	+	it.next();
1935	+	shouldThrow();
1936	+	} catch (NoSuchElementException success) {}
1937	+	assertFalse(it.hasNext());
1938	+	}
1939	+
1940	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1941	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1942	+	}
1943	+
1944	+	public Runnable runnableThrowing(final RuntimeException ex) {
1945	+	return new Runnable() { public void run() { throw ex; }};
1946	+	}
1947	+
1948	+	/** A reusable thread pool to be shared by tests. */
1949	+	static final ExecutorService cachedThreadPool =
1950	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1951	+	1000L, MILLISECONDS,
1952	+	new SynchronousQueue<Runnable>());
1953	+
1954		/**
1955	<	* For use as RejectedExecutionHandler in constructors
1955	>	* Returns maximum number of tasks that can be submitted to given
1956	>	* pool (with bounded queue) before saturation (when submission
1957	>	* throws RejectedExecutionException).
1958		*/
1959	<	static class NoOpREHandler implements RejectedExecutionHandler{
1960	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1959	>	static final int saturatedSize(ThreadPoolExecutor pool) {
1960	>	BlockingQueue<Runnable> q = pool.getQueue();
1961	>	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1962	>	}
1963	>
1964	>	static <T> void shuffle(T[] array) {
1965	>	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1966		}
521	–
522	–
1967		}

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